PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-22:28:00
G01     40.0           14.9                9.4 +/-    3.10      23.5 +/-    3.10  0.120 / 0.140
G06     177.0          37.7               15.5 +/-    1.23      23.4 +/-    1.23  0.110 / 0.170
G13     235.6          21.4               15.8 +/-    1.84      33.5 +/-    1.84  0.030 / 0.030
G15     268.8          11.7               12.5 +/-    3.44      33.5 +/-    3.44  0.030 / 0.030
G17     7.2            68.7               11.1 +/-    0.55      11.8 +/-    0.55  0.130 / 0.310
G19     281.1          69.9              -11.0 +/-    0.68     -11.6 +/-    0.68  0.140 / 0.240
G24     315.4          21.6                9.0 +/-    2.69      19.1 +/-    2.69  0.110 / 0.390
G28     69.2           49.3               11.2 +/-    0.85      14.3 +/-    0.85  0.100 / 0.170
G30     154.6          25.0               13.9 +/-    2.53      27.1 +/-    2.53  0.090 / 0.080