PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-04:58:00
G01     320.2          14.7              -14.9 +/-   26.62     -37.3 +/-   26.62  0.150 / 0.370
G08     260.9          15.0               10.1 +/-    1.34      25.2 +/-    1.34  0.230 / 0.300
G10     73.7           55.1                6.7 +/-    0.45       8.0 +/-    0.45  0.160 / 0.280
G11     306.2          21.3                6.9 +/-    2.39      14.7 +/-    2.39  0.160 / 0.270
G14     280.0          67.7                6.8 +/-    0.61       7.3 +/-    0.61  0.040 / 0.050
G18     308.0          37.3                5.2 +/-    1.76       7.9 +/-    1.76  0.040 / 0.050
G20     95.5           44.6                8.2 +/-    1.56      11.2 +/-    1.56  0.160 / 0.410
G27     226.7          11.2               10.0 +/-    1.38      27.1 +/-    1.38  0.160 / 0.340
G31     175.0          39.7                7.7 +/-    1.24      11.3 +/-    1.24  0.140 / 0.280
G32     4.4            69.1                7.1 +/-    0.63       7.5 +/-    0.63  0.150 / 0.230