PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-23:58:10
G01     62.7           31.4                9.6 +/-    1.75      16.3 +/-    1.75  0.060 / 0.080
G06     181.3          12.3                9.8 +/-   26.75      25.9 +/-   26.75  0.080 / 0.070
G07     141.2          24.9               12.6 +/-    1.22      24.7 +/-    1.22  0.030 / 0.030
G11     50.7           27.8                8.0 +/-    2.30      14.7 +/-    2.30  0.030 / 0.030
G13     266.2          35.9               13.7 +/-    1.18      21.5 +/-    1.18  0.140 / 0.380
G15     295.6          16.6                9.6 +/-    1.25      23.1 +/-    1.25  0.140 / 0.320
G17     246.9          71.8               11.9 +/-    0.72      12.5 +/-    0.72  0.040 / 0.050
G19     230.4          48.4               12.3 +/-    2.14      15.8 +/-    2.14  0.030 / 0.040
G28     32.8           57.1               11.0 +/-    0.73      12.8 +/-    0.73  0.070 / 0.120
G30     141.3          51.5               13.5 +/-    0.65      16.7 +/-    0.65  0.090 / 0.130