PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-06:42:50
G01     47.9           23.4                2.2 +/-    1.69       4.5 +/-    1.69  0.050 / 0.050
G06     176.4          25.8                4.4 +/-    2.04       8.4 +/-    2.04  0.050 / 0.060
G07     146.0          11.8                5.0 +/-    2.01      13.5 +/-    2.01  0.140 / 0.190
G11     45.1           17.9                3.6 +/-    2.13       8.3 +/-    2.13  0.130 / 0.240
G13     248.1          30.9                5.0 +/-    1.51       8.7 +/-    1.51  0.040 / 0.060
G15     280.6          16.0                4.5 +/-    1.98      10.9 +/-    1.98  0.040 / 0.040
G17     318.6          78.9                4.9 +/-    0.65       5.0 +/-    0.65  0.030 / 0.020
G19     248.0          62.9                5.0 +/-    0.86       5.6 +/-    0.86  0.030 / 0.020
G28     40.9           57.6                3.5 +/-    1.09       4.1 +/-    1.09  0.030 / 0.040
G30     151.2          44.4                7.4 +/-    0.84      10.1 +/-    0.84  0.050 / 0.040