PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-17:12:40
G01     39.7           14.5                7.6 +/-    1.24      19.3 +/-    1.24  0.130 / 0.290
G06     174.2          40.3               13.1 +/-    1.48      19.0 +/-    1.48  0.170 / 0.360
G13     235.1          21.4               12.4 +/-    2.10      26.3 +/-    2.10  0.040 / 0.070
G15     268.9          11.6               10.8 +/-    3.69      29.0 +/-    3.69  0.040 / 0.090
G17     0.0            70.5               10.1 +/-    0.64      10.6 +/-    0.64  0.100 / 0.260
G19     283.8          70.7               10.3 +/-    0.39      10.9 +/-    0.39  0.110 / 0.230
G24     315.8          20.3                9.8 +/-    1.72      21.4 +/-    1.72  0.040 / 0.040
G28     67.9           50.3                8.9 +/-    0.59      11.1 +/-    0.59  0.040 / 0.040
G30     154.3          23.8               11.5 +/-    1.21      23.2 +/-    1.21  0.040 / 0.040