PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-19:42:50
G02     216.3          59.2               11.7 +/-    0.62      13.4 +/-    0.62  0.050 / 0.080
G06     56.1           72.9               10.8 +/-    1.10      11.3 +/-    1.10  0.070 / 0.070
G12     319.3          38.5                9.1 +/-    0.75      13.6 +/-    0.75  0.040 / 0.090
G17     56.9           33.1                8.6 +/-    0.27      14.1 +/-    0.27  0.060 / 0.070
G19     36.4           51.1                8.7 +/-    0.38      10.9 +/-    0.38  0.040 / 0.060
G24     264.1          41.8               10.5 +/-    1.83      14.9 +/-    1.83  0.030 / 0.050
G28     122.6          13.7               11.5 +/-    1.41      29.5 +/-    1.41  0.040 / 0.060