PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-14:57:50
G01     115.7          20.3               11.8 +/-    1.83      25.7 +/-    1.83  0.040 / 0.060
G07     89.6           64.6               10.9 +/-    0.55      12.0 +/-    0.55  0.040 / 0.060
G08     43.6           28.3                7.8 +/-    1.12      14.2 +/-    1.12  0.040 / 0.040
G09     175.7          21.1               10.7 +/-    0.91      23.0 +/-    0.91  0.040 / 0.040
G11     101.4          41.3               12.4 +/-    0.41      17.7 +/-    0.41  0.130 / 0.180
G13     315.7          22.5                7.9 +/-    2.23      16.3 +/-    2.23  0.130 / 0.140
G17     202.9          27.8                9.9 +/-    1.55      18.2 +/-    1.55  0.030 / 0.050
G18     90.1           22.2                9.3 +/-    1.21      19.5 +/-    1.21  0.030 / 0.040
G28     299.9          58.7                9.6 +/-    0.53      11.1 +/-    0.53  0.040 / 0.080
G30     353.1          71.5               10.0 +/-    1.32      10.5 +/-    1.32  0.040 / 0.080