PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-19:28:10
G01     82.9           33.0               12.4 +/-    0.98      20.4 +/-    0.98  0.090 / 0.230
G07     130.7          40.6               14.2 +/-    0.79      20.5 +/-    0.79  0.090 / 0.250
G11     63.0           37.7               10.9 +/-    1.03      16.5 +/-    1.03  0.030 / 0.030
G13     287.5          37.3               11.8 +/-    1.76      18.0 +/-    1.76  0.030 / 0.040
G15     311.2          12.2               10.0 +/-    1.30      26.7 +/-    1.30  0.040 / 0.060
G17     220.1          56.1               14.1 +/-    0.56      16.6 +/-    0.56  0.040 / 0.060
G18     58.1           22.5                9.8 +/-    1.21      20.2 +/-    1.21  0.060 / 0.090
G19     217.8          31.4               15.6 +/-    1.56      26.6 +/-    1.56  0.050 / 0.090
G28     1.6            61.1               12.2 +/-    0.82      13.7 +/-    0.82  0.030 / 0.060
G30     121.1          70.2               14.8 +/-    0.95      15.6 +/-    0.95  0.030 / 0.070