PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-00:27:40
G02     244.3          77.0                8.0 +/-    0.46       8.2 +/-    0.46  0.170 / 0.120
G05     170.8          16.9               10.7 +/-    2.49      25.4 +/-    2.49  0.130 / 0.120
G06     39.8           61.6                6.6 +/-    0.58       7.4 +/-    0.58  0.130 / 0.220
G12     320.8          49.3                8.5 +/-    1.10      10.8 +/-    1.10  0.180 / 0.270
G17     71.2           21.3                7.8 +/-    1.61      16.6 +/-    1.61  0.030 / 0.040
G19     57.1           38.2                8.6 +/-    1.13      12.8 +/-    1.13  0.040 / 0.040
G24     243.4          34.4               12.8 +/-    2.13      20.6 +/-    2.13  0.070 / 0.060
G25     316.4          13.2                6.7 +/-    5.63      17.5 +/-    5.63  0.070 / 0.060