PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-03:28:00
G01     124.4          13.9                8.7 +/-    2.14      22.4 +/-    2.14  0.080 / 0.080
G07     63.4           68.6                4.7 +/-    0.39       5.0 +/-    0.39  0.090 / 0.050
G08     48.3           37.0                4.3 +/-    1.04       6.5 +/-    1.04  0.130 / 0.270
G09     178.3          33.2                7.8 +/-    1.22      12.8 +/-    1.22  0.210 / 0.170
G11     115.7          36.4                7.0 +/-    1.03      10.9 +/-    1.03  0.030 / 0.070
G13     320.7          13.2                2.1 +/-    3.36       5.5 +/-    3.36  0.060 / 0.050
G17     200.3          18.7                5.0 +/-    2.11      11.2 +/-    2.11  0.080 / 0.090
G28     282.7          55.1                3.9 +/-    2.52       4.6 +/-    2.52  0.090 / 0.090
G30     341.0          64.8                4.3 +/-    0.40       4.7 +/-    0.40  0.210 / 0.260