PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-17:12:50
G01     259.6          38.5                9.6 +/-    3.42      14.3 +/-    3.42  0.050 / 0.050
G03     316.7          40.4                7.5 +/-    0.75      10.8 +/-    0.75  0.040 / 0.050
G10     134.3          10.3               13.2 +/-    1.72      36.6 +/-    1.72  0.030 / 0.040
G11     245.8          16.4               10.7 +/-    1.20      25.7 +/-    1.20  0.030 / 0.030
G14     51.5           46.2                8.0 +/-    0.72      10.6 +/-    0.72  0.070 / 0.170
G22     310.7          61.4                7.4 +/-    0.87       8.3 +/-    0.87  0.190 / 0.200
G25     45.5           14.1                5.5 +/-    2.57      14.1 +/-    2.57  0.060 / 0.060
G26     141.4          32.4               11.5 +/-    1.22      19.2 +/-    1.22  0.050 / 0.050
G31     43.8           64.8                8.2 +/-    0.42       8.9 +/-    0.42  0.220 / 0.280
G32     71.9           26.5                8.1 +/-    1.28      15.3 +/-    1.28  0.170 / 0.280