PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-16:42:40
G07     29.5           69.4               13.8 +/-    0.73      14.6 +/-    0.73  0.040 / 0.070
G08     58.4           46.5               11.9 +/-    0.54      15.7 +/-    0.54  0.030 / 0.070
G09     179.0          43.7               16.1 +/-    1.56      22.1 +/-    1.56  0.030 / 0.030
G11     126.3          30.8               13.3 +/-    1.02      23.0 +/-    1.02  0.030 / 0.040
G18     110.5          13.0               11.9 +/-    1.79      31.1 +/-    1.79  0.050 / 0.050
G23     159.1          11.0               13.2 +/-    1.16      35.9 +/-    1.16  0.040 / 0.060
G27     38.6           12.7                9.1 +/-    1.57      23.9 +/-    1.57  0.080 / 0.180
G28     266.0          49.0               16.2 +/-    0.61      20.7 +/-    0.61  0.080 / 0.160
G30     325.9          55.2               13.3 +/-    0.81      15.8 +/-    0.81  0.120 / 0.430