PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-17:58:00
G01     101.6          27.5               11.2 +/-    1.31      20.6 +/-    1.31  0.050 / 0.050
G07     116.1          48.3               12.4 +/-    0.64      15.9 +/-    0.64  0.060 / 0.050
G08     41.6           16.4                8.3 +/-    2.98      19.9 +/-    2.98  0.040 / 0.050
G09     174.6          10.9               11.9 +/-    4.98      32.6 +/-    4.98  0.040 / 0.040
G11     80.9           42.8               11.4 +/-    0.41      15.8 +/-    0.41  0.050 / 0.060
G13     305.2          32.3                8.8 +/-    2.13      14.8 +/-    2.13  0.060 / 0.060
G17     207.1          42.4               12.7 +/-    0.87      17.8 +/-    0.87  0.160 / 0.430
G18     73.3           24.2               10.1 +/-    1.53      20.0 +/-    1.53  0.160 / 0.410
G28     317.3          60.1                9.7 +/-    0.87      11.0 +/-    0.87  0.120 / 0.240
G30     62.5           79.0               13.0 +/-    1.19      13.2 +/-    1.19  0.070 / 0.140