PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-14:27:50
G01     114.6          21.1               10.4 +/-    0.80      22.3 +/-    0.80  0.030 / 0.040
G07     92.4           63.8                8.7 +/-    0.79       9.5 +/-    0.79  0.040 / 0.040
G08     43.2           26.9                7.0 +/-    1.43      13.1 +/-    1.43  0.110 / 0.140
G09     175.3          19.7               10.6 +/-    1.23      23.6 +/-    1.23  0.100 / 0.180
G11     99.5           41.6                9.6 +/-    0.90      13.6 +/-    0.90  0.060 / 0.050
G13     314.9          23.4                5.7 +/-    1.40      11.5 +/-    1.40  0.060 / 0.050
G17     203.1          29.4               11.9 +/-    2.82      21.0 +/-    2.82  0.030 / 0.040
G18     88.7           22.5                7.4 +/-    0.76      15.3 +/-    0.76  0.030 / 0.030
G28     302.1          59.1                8.0 +/-    1.15       9.2 +/-    1.15  0.040 / 0.080
G30     355.2          72.4                8.0 +/-    0.91       8.3 +/-    0.91  0.050 / 0.090