PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-13:58:00
G07     13.1           67.9                6.8 +/-    0.59       7.3 +/-    0.59  0.050 / 0.080
G08     64.5           48.7                7.8 +/-    0.38      10.0 +/-    0.38  0.050 / 0.080
G09     178.7          49.4               10.2 +/-    1.98      12.9 +/-    1.98  0.040 / 0.060
G11     130.7          27.0                9.2 +/-    0.95      17.1 +/-    0.95  0.050 / 0.050
G23     159.4          18.6                9.6 +/-    3.03      21.9 +/-    3.03  0.080 / 0.140
G27     40.9           17.8                6.7 +/-    0.96      15.5 +/-    0.96  0.080 / 0.170
G28     257.9          44.9                7.8 +/-    0.98      10.5 +/-    0.98  0.040 / 0.040
G30     319.1          49.5                7.8 +/-    1.15       9.8 +/-    1.15  0.040 / 0.040