PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-22:58:00
G01     54.9           28.4               12.3 +/-    2.35      22.3 +/-    2.35  0.090 / 0.510
G07     144.5          17.9               14.5 +/-    0.93      33.5 +/-    0.93  0.090 / 0.550
G11     46.9           21.3               10.1 +/-    2.62      21.6 +/-    2.62  0.170 / 0.080
G13     256.9          33.0               13.1 +/-    2.80      21.6 +/-    2.80  0.180 / 0.090
G15     288.5          16.4               11.1 +/-    1.62      26.8 +/-    1.62  0.080 / 0.140
G17     269.8          75.6               13.5 +/-    0.72      13.9 +/-    0.72  0.080 / 0.140
G18     39.7           9.9                 8.1 +/-    3.28      22.7 +/-    3.28  0.040 / 0.050
G19     238.9          54.9               13.6 +/-    2.71      16.2 +/-    2.71  0.040 / 0.060
G28     45.0           54.6               12.0 +/-    1.14      14.3 +/-    1.14  0.030 / 0.030
G30     146.4          44.6               14.1 +/-    0.94      19.1 +/-    0.94  0.030 / 0.030