PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-18:58:00
G01     94.0           30.3               11.3 +/-    1.66      19.7 +/-    1.66  0.030 / 0.070
G07     123.1          42.1               12.8 +/-    0.90      18.0 +/-    0.90  0.040 / 0.070
G08     41.9           10.3                9.6 +/-    1.42      26.7 +/-    1.42  0.050 / 0.060
G11     71.7           41.0               11.8 +/-    0.44      16.8 +/-    0.44  0.050 / 0.060
G13     298.2          35.5               12.4 +/-    1.16      19.5 +/-    1.16  0.170 / 0.330
G17     210.8          50.0               14.3 +/-    0.69      18.1 +/-    0.69  0.110 / 0.330
G18     65.7           23.6               10.3 +/-    0.60      20.7 +/-    0.60  0.080 / 0.160
G19     212.3          24.0               15.7 +/-    2.63      31.3 +/-    2.63  0.080 / 0.130
G28     331.3          61.3                9.9 +/-    1.43      11.1 +/-    1.43  0.060 / 0.200
G30     94.9           76.7               12.5 +/-    1.01      12.8 +/-    1.01  0.070 / 0.170