PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-22:27:50
G01     69.7           32.8               11.8 +/-    1.14      19.6 +/-    1.14  0.540 / 0.370
G07     138.0          30.6               13.8 +/-    0.92      23.9 +/-    0.92  0.100 / 0.180
G11     54.3           31.7               10.3 +/-    1.21      17.4 +/-    1.21  0.290 / 0.120
G13     273.8          37.2               12.0 +/-    3.34      18.3 +/-    3.34  0.040 / 0.070
G15     301.4          15.7                7.9 +/-    2.56      19.3 +/-    2.56  0.080 / 0.100
G17     233.5          65.6               13.1 +/-    0.73      14.2 +/-    0.73  0.050 / 0.070
G18     48.7           18.1               11.7 +/-    1.77      27.0 +/-    1.77  0.040 / 0.090
G19     225.0          42.4               13.2 +/-    1.55      18.5 +/-    1.55  0.030 / 0.030
G28     22.1           58.9                9.1 +/-    1.67      10.4 +/-    1.67  0.030 / 0.060
G30     136.3          58.4               13.7 +/-    1.05      15.8 +/-    1.05  0.030 / 0.040