PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-15:12:50
G01     101.9          27.2                8.4 +/-    0.98      15.7 +/-    0.98  0.040 / 0.070
G07     114.8          50.3               11.0 +/-    0.72      13.8 +/-    0.72  0.050 / 0.050
G08     41.7           18.3                7.7 +/-    2.27      17.6 +/-    2.27  0.060 / 0.090
G09     174.7          11.3               11.0 +/-    4.00      29.9 +/-    4.00  0.100 / 0.080
G11     82.3           43.2               10.8 +/-    1.23      14.9 +/-    1.23  0.030 / 0.050
G13     305.6          32.1                9.1 +/-    1.51      15.3 +/-    1.51  0.040 / 0.050
G17     207.2          40.2               12.1 +/-    0.78      17.6 +/-    0.78  0.060 / 0.120
G18     74.5           24.4                9.4 +/-    0.92      18.7 +/-    0.92  0.080 / 0.120
G28     314.7          59.7                9.2 +/-    0.97      10.5 +/-    0.97  0.050 / 0.080
G30     60.4           79.0               10.2 +/-    1.49      10.4 +/-    1.49  0.060 / 0.060