PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-19:13:10
G01     84.5           32.9               11.7 +/-    1.67      19.4 +/-    1.67  0.310 / 0.280
G07     129.7          41.7               13.3 +/-    0.91      18.8 +/-    0.91  0.160 / 0.340
G11     64.2           38.2               10.5 +/-    1.73      15.8 +/-    1.73  0.020 / 0.030
G13     289.0          37.1               12.5 +/-    2.02      19.1 +/-    2.02  0.030 / 0.030
G15     312.3          11.7                9.7 +/-    3.00      26.0 +/-    3.00  0.030 / 0.050
G17     219.0          55.0               13.2 +/-    1.20      15.8 +/-    1.20  0.030 / 0.060
G18     59.3           22.9                9.8 +/-    1.06      20.2 +/-    1.06  0.040 / 0.040
G19     217.1          30.1               13.7 +/-    2.05      24.0 +/-    2.05  0.040 / 0.050
G28     359.1          61.3               10.6 +/-    1.21      11.9 +/-    1.21  0.100 / 0.150
G30     118.4          71.4               13.0 +/-    0.55      13.6 +/-    0.55  0.070 / 0.170