PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-15:28:00
G01     76.1           32.7                9.2 +/-    0.62      15.3 +/-    0.62  0.040 / 0.110
G07     134.0          31.4               11.0 +/-    0.45      18.6 +/-    0.45  0.040 / 0.130
G11     57.0           34.5                7.7 +/-    0.58      12.4 +/-    0.58  0.040 / 0.060
G13     280.1          38.8                9.2 +/-    1.54      13.7 +/-    1.54  0.040 / 0.060
G15     306.6          14.2                6.2 +/-    1.91      15.7 +/-    1.91  0.060 / 0.150
G17     223.8          62.0               12.5 +/-    1.18      13.9 +/-    1.18  0.050 / 0.120
G18     52.2           20.0                7.2 +/-    1.18      15.8 +/-    1.18  0.070 / 0.140
G19     219.7          38.4               10.6 +/-    1.55      15.9 +/-    1.55  0.060 / 0.120
G28     358.0          61.4                7.7 +/-    0.46       8.7 +/-    0.46  0.030 / 0.050
G30     129.7          64.5                9.4 +/-    0.67      10.3 +/-    0.67  0.030 / 0.040