PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-19:57:50
G02     256.4          78.4                9.1 +/-    0.61       9.3 +/-    0.61  0.090 / 0.190
G05     169.7          20.0               12.5 +/-    0.85      27.5 +/-    0.85  0.110 / 0.120
G06     39.6           54.8                9.3 +/-    0.72      11.1 +/-    0.72  0.140 / 0.400
G12     320.8          53.9                8.7 +/-    1.79      10.5 +/-    1.79  0.120 / 0.510
G17     73.0           21.2                8.7 +/-    0.88      18.6 +/-    0.88  0.030 / 0.040
G19     61.4           35.0                8.4 +/-    0.36      13.3 +/-    0.36  0.030 / 0.040
G24     241.1          32.2               12.3 +/-    1.50      20.6 +/-    1.50  0.040 / 0.060
G25     316.9          15.1                6.7 +/-    3.98      16.6 +/-    3.98  0.060 / 0.060