PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-15:58:00
G01     50.9           26.1               11.3 +/-    1.17      21.5 +/-    1.17  0.040 / 0.060
G06     176.6          25.5               11.6 +/-    1.50      22.4 +/-    1.50  0.040 / 0.070
G07     146.0          13.4               13.8 +/-    2.04      35.5 +/-    2.04  0.080 / 0.120
G11     44.7           15.4                9.2 +/-    2.60      22.6 +/-    2.60  0.060 / 0.130
G13     251.3          31.0               12.7 +/-    1.16      21.8 +/-    1.16  0.170 / 0.360
G15     287.2          15.1                9.2 +/-    1.23      22.9 +/-    1.23  0.110 / 0.360
G17     308.9          78.8               13.2 +/-    1.04      13.4 +/-    1.04  0.190 / 0.450
G19     243.4          56.1               15.2 +/-    0.88      17.9 +/-    0.88  0.180 / 0.560
G28     50.8           53.3               11.7 +/-    0.39      14.2 +/-    0.39  0.040 / 0.060
G30     149.5          43.3               12.6 +/-    1.45      17.3 +/-    1.45  0.040 / 0.070