PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-17:58:00
G01     110.6          23.7               13.1 +/-    1.07      26.3 +/-    1.07  0.180 / 0.110
G07     100.5          61.3               11.8 +/-    0.67      13.3 +/-    0.67  0.140 / 0.100
G08     42.7           25.3                9.8 +/-    2.63      19.0 +/-    2.63  0.030 / 0.040
G09     175.5          16.9               14.2 +/-    3.43      33.8 +/-    3.43  0.040 / 0.040
G11     95.1           42.7               13.0 +/-    0.60      18.1 +/-    0.60  0.020 / 0.020
G13     312.3          26.2               12.2 +/-    2.27      23.2 +/-    2.27  0.020 / 0.020
G17     205.3          31.5               14.4 +/-    0.99      24.4 +/-    0.99  0.090 / 0.170
G18     84.6           23.7                9.9 +/-    1.18      20.0 +/-    1.18  0.110 / 0.120
G28     311.2          60.3               10.8 +/-    1.17      12.2 +/-    1.17  0.100 / 0.160
G30     12.5           76.2               12.2 +/-    0.80      12.5 +/-    0.80  0.100 / 0.150