PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/26-16:27:50
G01     52.1           26.6                5.8 +/-    2.40      10.9 +/-    2.40  0.040 / 0.050
G06     178.2          21.3               10.2 +/-    1.18      21.7 +/-    1.18  0.030 / 0.050
G07     144.3          11.4               10.1 +/-    2.40      27.2 +/-    2.40  0.170 / 0.410
G11     45.2           17.8                7.0 +/-    2.13      16.3 +/-    2.13  0.200 / 0.300
G13     252.7          32.8                8.0 +/-    2.85      13.2 +/-    2.85  0.170 / 0.210
G15     286.2          16.2                8.4 +/-    0.72      20.3 +/-    0.72  0.140 / 0.250
G17     285.4          78.3                9.0 +/-    0.67       9.1 +/-    0.67  0.030 / 0.030
G19     241.2          58.4                8.9 +/-    1.88      10.3 +/-    1.88  0.030 / 0.030
G28     38.8           57.3                9.7 +/-    0.98      11.3 +/-    0.98  0.060 / 0.130
G30     147.6          42.4                9.9 +/-    0.57      13.8 +/-    0.57  0.090 / 0.150