PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-03:28:10
G01     86.7           32.5                3.7 +/-    1.36       6.1 +/-    1.36  0.050 / 0.040
G07     128.1          42.9                5.3 +/-    0.52       7.4 +/-    0.52  0.060 / 0.040
G11     67.1           39.3                4.4 +/-    2.11       6.5 +/-    2.11  0.030 / 0.060
G13     292.3          36.1                2.7 +/-    2.66       4.3 +/-    2.66  0.040 / 0.050
G15     312.7          11.8                1.3 +/-    3.01       3.5 +/-    3.01  0.040 / 0.050
G17     217.1          56.4                5.8 +/-    1.17       6.8 +/-    1.17  0.040 / 0.050
G19     216.0          30.6                4.7 +/-    3.07       8.1 +/-    3.07  0.200 / 0.310
G28     356.5          61.4                2.8 +/-    0.92       3.1 +/-    0.92  0.190 / 0.320
G30     115.6          70.6                5.2 +/-    0.57       5.4 +/-    0.57  0.070 / 0.090