PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-14:13:10
G07     22.6           68.9                9.9 +/-    0.83      10.6 +/-    0.83  0.050 / 0.050
G08     60.0           46.8                9.7 +/-    1.20      12.8 +/-    1.20  0.050 / 0.050
G09     178.3          45.6               11.7 +/-    1.02      15.6 +/-    1.02  0.030 / 0.050
G11     127.7          29.3               12.9 +/-    1.01      22.9 +/-    1.01  0.050 / 0.040
G18     112.4          11.6               10.4 +/-    1.71      27.9 +/-    1.71  0.020 / 0.020
G23     159.7          15.1                8.6 +/-    1.89      21.3 +/-    1.89  0.030 / 0.030
G27     39.5           15.1                8.4 +/-    1.57      20.9 +/-    1.57  0.170 / 0.300
G28     262.3          47.2               10.2 +/-    4.80      13.4 +/-    4.80  0.140 / 0.320
G30     322.4          52.3                9.1 +/-    0.55      11.2 +/-    0.55  0.040 / 0.050