PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-19:28:10
G01     76.0           33.3               10.5 +/-    1.24      17.2 +/-    1.24  0.120 / 0.250
G07     134.8          35.4               13.0 +/-    1.06      20.5 +/-    1.06  0.100 / 0.230
G11     57.6           34.3               11.5 +/-    1.31      18.4 +/-    1.31  0.040 / 0.030
G13     280.2          37.7               10.9 +/-    2.52      16.5 +/-    2.52  0.030 / 0.030
G15     306.7          14.0                8.8 +/-    2.88      22.3 +/-    2.88  0.040 / 0.070
G17     226.3          61.7               13.4 +/-    1.57      15.0 +/-    1.57  0.080 / 0.060
G18     52.9           20.4               10.5 +/-    6.71      22.8 +/-    6.71  0.060 / 0.040
G19     221.2          36.6               12.8 +/-    1.25      19.7 +/-    1.25  0.040 / 0.050
G28     12.3           60.1               11.6 +/-    1.54      13.2 +/-    1.54  0.460 / 0.360
G30     130.3          65.1               12.3 +/-    0.30      13.4 +/-    0.30  0.360 / 0.380