PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-13:12:50
G01     73.4           33.1                5.2 +/-    1.00       8.5 +/-    1.00  0.040 / 0.030
G07     136.1          32.9                6.2 +/-    0.75      10.2 +/-    0.75  0.030 / 0.030
G11     54.5           31.2                5.9 +/-    1.31      10.1 +/-    1.31  0.040 / 0.080
G13     277.0          37.9                5.4 +/-    1.86       8.1 +/-    1.86  0.040 / 0.070
G15     307.5          12.8                3.1 +/-    2.18       8.2 +/-    2.18  0.050 / 0.100
G17     229.9          68.6                7.1 +/-    0.57       7.5 +/-    0.57  0.050 / 0.100
G18     50.3           18.8                5.6 +/-    2.10      12.7 +/-    2.10  0.040 / 0.060
G19     222.4          36.4                6.9 +/-    2.02      10.6 +/-    2.02  0.050 / 0.070
G28     15.0           59.9                6.9 +/-    1.28       7.9 +/-    1.28  0.180 / 0.150
G30     132.8          65.8                7.1 +/-    0.48       7.7 +/-    0.48  0.280 / 0.200