PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/24-11:27:50
G01     112.9          22.1                4.7 +/-    1.06       9.9 +/-    1.06  0.050 / 0.060
G07     96.4           62.3                5.1 +/-    1.42       5.7 +/-    1.42  0.050 / 0.060
G08     42.3           23.3                3.2 +/-    0.95       6.6 +/-    0.95  0.030 / 0.040
G09     174.2          16.9                6.0 +/-    0.54      14.3 +/-    0.54  0.030 / 0.050
G11     95.5           41.8                5.1 +/-    0.82       7.3 +/-    0.82  0.030 / 0.030
G13     313.7          24.9                2.6 +/-    1.84       5.1 +/-    1.84  0.040 / 0.020
G17     202.9          33.3                5.0 +/-    2.88       8.2 +/-    2.88  0.090 / 0.170
G18     86.2           22.9                1.4 +/-    0.76       2.8 +/-    0.76  0.100 / 0.150
G28     305.2          59.5                4.6 +/-    0.61       5.3 +/-    0.61  0.090 / 0.200
G30     355.9          73.1                5.2 +/-    0.64       5.4 +/-    0.64  0.090 / 0.240