PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-12:58:00
G01     117.7          17.8                7.0 +/-    1.90      16.2 +/-    1.90  0.060 / 0.080
G07     87.6           63.1                7.1 +/-    0.84       7.9 +/-    0.84  0.070 / 0.080
G08     45.6           33.7                5.9 +/-    1.66       9.6 +/-    1.66  0.060 / 0.090
G09     177.3          26.7                6.0 +/-    1.80      11.3 +/-    1.80  0.070 / 0.070
G11     106.2          41.1                6.4 +/-    0.48       9.1 +/-    0.48  0.040 / 0.040
G13     317.0          20.8                4.4 +/-    3.74       9.6 +/-    3.74  0.030 / 0.030
G17     202.0          22.1                7.1 +/-    2.48      14.9 +/-    2.48  0.360 / 0.150
G18     92.7           20.9                6.2 +/-    1.90      13.4 +/-    1.90  0.300 / 0.180
G28     284.7          53.5                6.8 +/-    2.40       8.2 +/-    2.40  0.090 / 0.140
G30     350.1          70.1                6.8 +/-    0.63       7.2 +/-    0.63  0.100 / 0.140