PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-18:27:50
G01     88.0           31.8                8.9 +/-    1.05      15.1 +/-    1.05  0.060 / 0.060
G07     127.4          38.1               11.4 +/-    1.60      17.1 +/-    1.60  0.040 / 0.050
G11     65.8           39.1                8.0 +/-    0.64      11.9 +/-    0.64  0.050 / 0.070
G13     292.4          37.3                9.2 +/-    1.11      14.0 +/-    1.11  0.040 / 0.080
G15     313.8          11.0                4.4 +/-   19.67      12.1 +/-   19.67  0.060 / 0.100
G17     214.5          54.8               13.7 +/-    1.06      16.4 +/-    1.06  0.050 / 0.090
G18     60.7           22.8                6.9 +/-    0.76      14.2 +/-    0.76  0.180 / 0.330
G19     214.5          28.8               12.8 +/-    1.88      23.1 +/-    1.88  0.200 / 0.380
G28     341.0          61.6                8.8 +/-    0.91       9.9 +/-    0.91  0.060 / 0.140
G30     112.1          72.8               10.0 +/-    0.73      10.4 +/-    0.73  0.060 / 0.140