PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-12:43:00
G01     106.9          25.6                5.3 +/-    0.74      10.2 +/-    0.74  0.030 / 0.030
G07     107.2          58.0                6.7 +/-    0.90       7.7 +/-    0.90  0.030 / 0.040
G08     41.7           18.7                4.5 +/-    1.28      10.2 +/-    1.28  0.070 / 0.120
G09     173.4          11.6                5.2 +/-    1.62      14.1 +/-    1.62  0.070 / 0.100
G11     87.3           42.4                5.8 +/-    0.47       8.2 +/-    0.47  0.040 / 0.050
G13     309.3          29.0                4.0 +/-    2.38       7.1 +/-    2.38  0.050 / 0.050
G17     205.5          39.0                7.9 +/-    2.19      11.7 +/-    2.19  0.040 / 0.090
G18     79.6           24.1                4.2 +/-    0.62       8.4 +/-    0.62  0.040 / 0.080
G28     317.7          60.9                4.3 +/-    0.73       4.9 +/-    0.73  0.100 / 0.200
G30     16.9           77.8                5.7 +/-    0.75       5.8 +/-    0.75  0.080 / 0.180