PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-14:57:40
G01     115.7          20.3               11.0 +/-    1.55      23.9 +/-    1.55  0.070 / 0.180
G07     89.6           64.6               10.1 +/-    0.79      11.1 +/-    0.79  0.110 / 0.230
G08     43.6           28.3                8.2 +/-    2.30      14.9 +/-    2.30  0.040 / 0.030
G09     175.7          21.1                9.6 +/-    2.98      20.6 +/-    2.98  0.030 / 0.030
G11     101.4          41.3               10.9 +/-    0.63      15.5 +/-    0.63  0.040 / 0.060
G13     315.7          22.5                8.1 +/-    1.92      16.8 +/-    1.92  0.040 / 0.030
G17     202.9          27.8               11.9 +/-    2.28      21.9 +/-    2.28  0.100 / 0.130
G18     90.1           22.2                8.9 +/-    1.22      18.6 +/-    1.22  0.080 / 0.120
G28     299.9          58.7                9.8 +/-    1.14      11.3 +/-    1.14  0.200 / 0.240
G30     353.1          71.5                9.8 +/-    0.76      10.3 +/-    0.76  0.180 / 0.240