PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-10:27:50
G01     112.2          22.6                6.2 +/-    1.80      12.8 +/-    1.80  0.030 / 0.020
G07     98.4           61.5                6.5 +/-    0.31       7.3 +/-    0.31  0.030 / 0.020
G08     42.3           23.2                3.0 +/-    2.08       6.0 +/-    2.08  0.120 / 0.150
G09     173.1          14.8                5.3 +/-    2.27      13.3 +/-    2.27  0.080 / 0.140
G11     94.8           42.1                7.1 +/-    0.76      10.1 +/-    0.76  0.140 / 0.220
G13     313.2          25.5                4.1 +/-    1.57       7.9 +/-    1.57  0.110 / 0.190
G17     203.3          33.8                6.7 +/-    1.39      10.8 +/-    1.39  0.030 / 0.030
G18     84.8           23.1                5.7 +/-    3.64      11.6 +/-    3.64  0.030 / 0.030
G28     305.8          59.5                5.1 +/-    1.11       5.8 +/-    1.11  0.090 / 0.160
G30     358.7          74.0                5.9 +/-    1.00       6.1 +/-    1.00  0.080 / 0.160