PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-23:58:00
G01     96.0           29.9                8.2 +/-    1.19      14.4 +/-    1.19  0.060 / 0.050
G07     121.2          46.0                7.9 +/-    0.99      10.5 +/-    0.99  0.050 / 0.050
G08     41.7           9.9                 4.8 +/-    4.69      13.3 +/-    4.69  0.070 / 0.120
G11     72.9           41.0                6.8 +/-    1.64       9.8 +/-    1.64  0.060 / 0.120
G13     299.9          34.7                6.4 +/-    1.31      10.3 +/-    1.31  0.040 / 0.050
G17     209.7          50.5                9.2 +/-    0.41      11.5 +/-    0.41  0.050 / 0.050
G18     65.4           22.9                5.7 +/-    1.61      11.7 +/-    1.61  0.230 / 0.160
G19     212.0          21.5                7.7 +/-    1.99      16.4 +/-    1.99  0.220 / 0.120
G28     331.4          61.4                5.2 +/-    0.78       5.9 +/-    0.78  0.070 / 0.190
G30     79.9           79.3                7.6 +/-    0.66       7.7 +/-    0.66  0.080 / 0.150