PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-15:57:40
G02     200.2          14.4                8.6 +/-    3.45      21.8 +/-    3.45  0.090 / 0.150
G06     171.8          48.2               11.1 +/-    1.16      14.3 +/-    1.16  0.150 / 0.180
G13     229.7          16.8               10.3 +/-    2.57      24.6 +/-    2.57  0.040 / 0.060
G17     10.0           66.0               10.0 +/-    1.26      10.8 +/-    1.26  0.050 / 0.070
G19     308.7          72.1               10.1 +/-    0.50      10.6 +/-    0.50  0.030 / 0.030
G24     313.0          25.3                8.7 +/-    1.00      16.8 +/-    1.00  0.030 / 0.040
G28     76.8           47.3               11.5 +/-    1.14      15.0 +/-    1.14  0.040 / 0.040
G30     156.0          18.3                8.9 +/-    0.70      20.4 +/-    0.70  0.040 / 0.030