PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-00:27:30
G02     294.5          81.6                9.8 +/-    0.35       9.9 +/-    0.35  0.030 / 0.060
G05     167.2          25.3               15.7 +/-    1.34      30.4 +/-    1.34  0.030 / 0.040
G06     38.9           52.0                8.4 +/-    0.38      10.3 +/-    0.38  0.120 / 0.170
G12     319.5          58.8                8.8 +/-    1.04      10.1 +/-    1.04  0.080 / 0.190
G17     78.7           16.0                9.9 +/-    0.88      24.0 +/-    0.88  0.090 / 0.220
G19     66.2           32.4                9.5 +/-    1.01      15.8 +/-    1.01  0.110 / 0.200
G24     234.7          28.6               12.7 +/-    1.97      23.0 +/-    1.97  0.060 / 0.040
G25     317.4          21.2                7.7 +/-    2.67      16.4 +/-    2.67  0.060 / 0.040