PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-17:43:00
G01     120.3          16.2               13.1 +/-    1.83      31.6 +/-    1.83  0.050 / 0.060
G07     85.9           62.2               10.4 +/-    0.42      11.6 +/-    0.42  0.040 / 0.070
G08     45.8           33.1                8.5 +/-    0.50      14.0 +/-    0.50  0.040 / 0.100
G09     178.0          29.6               10.7 +/-    1.63      19.0 +/-    1.63  0.040 / 0.090
G11     108.1          39.8               12.7 +/-    0.68      18.5 +/-    0.68  0.030 / 0.050
G13     318.3          18.6                9.9 +/-    2.16      22.6 +/-    2.16  0.030 / 0.040
G17     200.6          22.4               11.2 +/-    0.69      23.4 +/-    0.69  0.080 / 0.240
G18     94.4           19.9               12.4 +/-    0.60      27.4 +/-    0.60  0.090 / 0.230
G28     282.3          53.2               11.5 +/-    0.98      13.9 +/-    0.98  0.110 / 0.290
G30     347.4          68.6                9.8 +/-    0.86      10.4 +/-    0.86  0.140 / 0.260