PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-17:57:20
G01     101.6          27.5               13.2 +/-    0.91      24.3 +/-    0.91  0.040 / 0.050
G07     116.1          48.3               13.9 +/-    0.36      17.9 +/-    0.36  0.040 / 0.070
G08     41.6           16.4                8.4 +/-    0.66      20.1 +/-    0.66  0.040 / 0.060
G09     174.6          10.9               13.4 +/-    1.57      36.7 +/-    1.57  0.030 / 0.060
G11     80.9           42.8               12.5 +/-    0.39      17.4 +/-    0.39  0.160 / 0.340
G13     305.2          32.3                9.5 +/-    1.94      15.9 +/-    1.94  0.170 / 0.360
G17     207.1          42.4               12.9 +/-    0.86      18.1 +/-    0.86  0.120 / 0.160
G18     73.3           24.2               10.7 +/-    0.71      21.3 +/-    0.71  0.070 / 0.160
G28     317.3          60.1               11.5 +/-    1.05      13.1 +/-    1.05  0.060 / 0.190
G30     62.5           79.0               13.1 +/-    0.74      13.3 +/-    0.74  0.070 / 0.160