PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-19:58:00
G01     81.3           32.7               10.5 +/-    0.90      17.3 +/-    0.90  0.050 / 0.080
G07     131.5          33.1               14.3 +/-    0.86      23.5 +/-    0.86  0.050 / 0.090
G11     59.9           36.0               11.7 +/-    1.03      18.2 +/-    1.03  0.050 / 0.040
G13     285.4          38.3               15.3 +/-    1.52      22.9 +/-    1.52  0.050 / 0.050
G15     309.5          13.2                9.1 +/-    2.17      23.5 +/-    2.17  0.030 / 0.030
G17     219.6          61.2               14.3 +/-    1.27      16.0 +/-    1.27  0.040 / 0.030
G18     54.9           20.8               10.2 +/-    3.47      22.0 +/-    3.47  0.060 / 0.110
G19     217.5          33.8               14.2 +/-    1.67      23.1 +/-    1.67  0.060 / 0.090
G28     353.1          61.6               10.1 +/-    0.70      11.3 +/-    0.70  0.140 / 0.310
G30     123.5          68.7               13.2 +/-    0.41      14.1 +/-    0.41  0.140 / 0.230