PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-13:57:50
G07     13.1           67.9                7.8 +/-    0.50       8.3 +/-    0.50  0.200 / 0.340
G08     64.5           48.7                7.0 +/-    0.58       9.0 +/-    0.58  0.250 / 0.220
G09     178.7          49.4               10.1 +/-    1.10      12.8 +/-    1.10  0.060 / 0.040
G11     130.7          27.0                8.0 +/-    0.75      14.9 +/-    0.75  0.050 / 0.040
G18     115.2          9.7                -7.7 +/-   17.54     -21.5 +/-   17.54  0.040 / 0.060
G23     159.4          18.6                9.0 +/-    1.85      20.4 +/-    1.85  0.030 / 0.030
G27     40.9           17.8                7.9 +/-    2.29      18.3 +/-    2.29  0.090 / 0.140
G28     257.9          44.9                9.9 +/-    3.27      13.3 +/-    3.27  0.080 / 0.150
G30     319.1          49.5                6.5 +/-    0.63       8.2 +/-    0.63  0.060 / 0.050