PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-07:58:10
G01     81.9           33.0                4.7 +/-    1.03       7.8 +/-    1.03  0.030 / 0.040
G07     131.2          38.4                8.0 +/-    0.88      11.9 +/-    0.88  0.030 / 0.040
G11     61.5           35.8                5.5 +/-    0.84       8.6 +/-    0.84  0.050 / 0.060
G13     288.2          36.6                6.7 +/-    1.54      10.3 +/-    1.54  0.070 / 0.060
G15     310.4          12.9                2.9 +/-    1.17       7.7 +/-    1.17  0.110 / 0.220
G17     220.7          62.2                8.3 +/-    1.58       9.3 +/-    1.58  0.120 / 0.260
G19     218.1          34.9                5.4 +/-    1.38       8.5 +/-    1.38  0.050 / 0.050
G28     3.7            60.8                3.5 +/-    0.69       4.0 +/-    0.69  0.060 / 0.050
G30     121.2          70.2                6.0 +/-    0.72       6.3 +/-    0.72  0.070 / 0.110