PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-10:57:50
G01     125.9          12.5                5.3 +/-    3.27      13.9 +/-    3.27  0.050 / 0.030
G07     57.5           69.2                5.1 +/-    0.36       5.4 +/-    0.36  0.040 / 0.030
G08     48.4           36.4                4.0 +/-    1.98       6.1 +/-    1.98  0.030 / 0.030
G09     176.0          32.1                4.3 +/-    1.32       7.2 +/-    1.32  0.040 / 0.030
G11     115.0          36.2                5.6 +/-    1.03       8.7 +/-    1.03  0.210 / 0.340
G13     320.7          13.1                3.2 +/-    3.27       8.4 +/-    3.27  0.250 / 0.400
G17     199.4          17.7                3.9 +/-    2.62       9.0 +/-    2.62  0.200 / 0.310
G18     101.7          17.3                4.4 +/-    2.10      10.4 +/-    2.10  0.150 / 0.220
G28     278.0          53.4                5.4 +/-    3.61       6.5 +/-    3.61  0.100 / 0.240
G30     332.2          60.2                2.9 +/-    0.79       3.3 +/-    0.79  0.110 / 0.210