PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-14:12:50
G01     120.5          16.9                9.5 +/-    1.20      22.6 +/-    1.20  0.040 / 0.040
G07     76.2           67.4                7.2 +/-    0.76       7.7 +/-    0.76  0.030 / 0.040
G08     45.6           32.7                6.5 +/-    0.61      10.9 +/-    0.61  0.080 / 0.240
G09     176.2          26.4                9.7 +/-    1.30      18.3 +/-    1.30  0.090 / 0.240
G11     108.4          39.3                9.1 +/-    0.54      13.4 +/-    0.54  0.040 / 0.060
G13     318.4          18.3                5.6 +/-    2.51      12.9 +/-    2.51  0.040 / 0.050
G17     201.4          22.5                9.6 +/-    2.40      20.0 +/-    2.40  0.030 / 0.040
G18     95.7           20.2                8.4 +/-    0.75      18.5 +/-    0.75  0.030 / 0.050
G28     289.7          56.7                8.3 +/-    0.83       9.7 +/-    0.83  0.050 / 0.090
G30     342.7          66.8                6.6 +/-    1.00       7.1 +/-    1.00  0.040 / 0.080